For more explanation read “13/9/65 Nr. 3 Zufälliger Polygonzug”. Both drawings were generated during the same night of 13 September, 1965, by the same program and the same parameter settings for random choices.

Of the original computer drawing (pen-and-ink) an unknown number exist, estimated at between 20 and 30. There also exists a silkscreen printing (edition of 40). All drawings and prints are signed by hand (pencil) on reverse. Computer-generated signature at lower right: NAKE/ER56/Z64.